Non-skidding traction-wheel.



0 A.. PETTlE. NONH-SKIDDING TRACTION WHEEL,

. APPLICATION HLED FEB; 3. 1917- Y a a;

WI T/VESS Patented Jam-1,1918. I

CHARLES A. PETTIE, or BROOKLYN; NEW YonKL nert-sublime TRACTION-.WHEEL. a

To all whom it may concern I Be it known that I, CHARLES A. Pnr'rm, a

citizen of the United States, residing at the city of New York, borough of Brooklyn,

county of Kings, and State of New York,

have invented a certain new and useful Non- Skidding Traction-VVheel, of whichthe following is a specification.

This invention is a non-skidding tread for vehicle "wheels,and it pertains, more particularly, to a tread of the character mentioned adapted motor driven vehicles. a The tread of this invention constitutes'a non-elastic and permanent part of the wheel, in -contradistinction to th'e elastic tires, of either an inflatable or a'solid rubber nature, or to the metal shoe, so called, used temporarily in cases of emergency upon elastic tires.

for use onthe wheels of The tread is 'of such construction that it secures contact with a road surface ina l manner to preclude, forfall pract1cal purposes, a tendencyto slip upon or slide along the roadway, particularly-should the latter 'be' in awet or a slippery condition. This capacity of'the tread, and inadolition thereto its capacity for picking up and retaining road material of a gritty nature, renders the tread suitable for the power driven wheel of automobiles, or of other power operated vehicles generally.

The invention consists of a plurality of members annular in form and composed of spiral or twisted material positioned adjacent each other, and constituting a rigid permanent tread surface for a vehicle wheel.

The annular members composed of twisted metal-present a multiplicity of contact points for theroadway, and said annular members provide spaces between the twisted portions thereof, into which spaces sand or gritty material is adapted to be packed tightly so as to afford a surface of such .nature as to secure good traction'with a road surface.

I For some purposes, I employ plane surface'marginal members positioned exteriorly t0 the twisted members so as to avoid inury to the road surface, such as apavement;

line 2 2 of-Fig.

Specification of Letters Patent. 5 i Paten ffl J' h. .11 191 Application filed February 3, 1917. 1 Serial Np. 146,3g9,

scription taken in connection with the draw-Y ings wherein; there is illustrated:different constructional' forins of the invention.

Figure l' is aside eleva'tionr'of'ymy treadapplied to anbrdinarj Vehicle wheel.

of said'sectionbeing indieat'edlby the dotted Fig. 3 is a' vertical the of the dotted line of; Fig. illustrating 1 i welding said; separator to the tire; band.

one ofthe' SeparatOrs'and th ef nethodtof.

Fig. 'lis a vertical cross section through Fig. '5 is" a vertical cross section of another,

marginal members ,are omitted and'thean of the invention in' Figs; 15a) l inclusive thetre'adillustratedinfFigs. 1, 2jand 3. 4;. 4

embodiment of the inventionf'wherein the i nular members ofjtwisted metal are held spaced relation mechanical retainers. I wlll first proceedfto describe that form orfelly B, thelatter beingshownin connecf. tion' withspokes C anda hub. D, although it is apparent 'that t;l1'e.tread;of this inventionv mayl'jbe used on wheels 01 any form Said felly band Ais shown as of continuous I construction adaptedito be shrunk upon the .l

folly B, but lit-is apparent that saidband A maybe attached mech'anically by suitable means to the wheel rim, although I have not considered itfnecessary" to illustrate; such.

mechanical attachment. The. telly-band, consists of a piece 'ofmetal rectangular in,

" cross sectionjot alwidth' approximating the h and, again, all the annular members are at tached by one meansor another to a fell y,{

band adapted for application to the wheel felly"preliminary tothe attachment of the face of the wheel telly, see Fig.f 4;,;'

The salient u f my tread fi o ngsist s.

0t a plurality of: members E, each composed of twistedfor spiral metaLILsaidfmeInberS' E being, positioned side by;s id e and secured to i the [telly band A, fAsisshownin Figl mrthe members E composed of twisted metal constitute the entire surface ,off tbe tread,

Y but fo Certain; urposes. the tread n mem ierSLFQ id ne O ,",.m0.re-ip 1-;I 8surfaced ,mernb'ersGI, v

inpart of the twisted 'members'lfi, marginal I G .consists oit'.aii'ing which; is substantially clrcular in cross. sect on, sa d ring being. :positi onedcentrally intermediate the ide ieage gjo-t .t eany band ...jA" The, ringmade separate from the fe'lly band so as to accurately fit the same,

and this ring is united at intervals to the felly band, as for eXample, by:- spotwelding u the ring G to the'felly band A, see Fig. 3, wherein the felly band is made integral by welding the same as at G at suitable intervals in the'length. of. said ringandi the V band. i v

The marginal members'F" are composed of ringswhich are rectangular in cross section so as toqprovide{fiatexposed"tread faces; The marginal members conform accurately tov the external diameter of the felly band A so that said.'marginalimembers will contact snugly 'wi'th the felly band, but while these marginal' members Fmjay' be shrunk upon the felly band, it ispreferrd to spot weld the marginal members to the felly band at "intervals in the length of said marginal members and the felly bandr In Eigs. 1 and 4,]the' marginal" memb'ers F are shown asbeings'pot welded'at fto the; felly band,

the welding op beineffectedbl the acetylene" welding operation and involving -Internn'adiate the plane surfaced marginal members F are positioned the desired number of twisted metal rings E, it being apparcut that two or'morefof the twisted. metal ringsma'y'be' employed according to; the width ofthewheel rim. As "shown in v 4, two of "the twist'ed rings E are'employed,

one-between the ring G and one marginal membcrF, and the; other between said ring G and fthe F." The twistedfmetal rings are of such fc'rOss: sectional form as to bring the surfaces" into' substantially flush relation to thepl anesurfaces of ring Gjand marginal mel'nbers F," thus presenting a treadithecon- V tour sew-1110a is irregular and is'characterized by the presence of'openlngs or; spaces into whichis 'packed or other gritty material'fso a's'to fil l allfthespaces and result in a" surface coinposedfiir part of metal and in part'fof gritty material. This gritty ma- I "terialfin dry or "m'dist weather, will pack intothe"spacesfofithetread so as to afford such a surfacef the tire "as will secure' the desiredfgood frictional "engagement between is apparent 'tha'tthemud, having a tendency to work into the spaces ofthe ram-win also free itselffromlthe wheel owing to the other marginal member the felly band A against sidewise displacement byreason of the contact between the said spirally twisted: jmembers E and the members F G, but in order to retain the spirally twisted 'members from rotative movement relatively to the felly band A, it

vals in the length thereof to said fellyband, such spot welding of the members E to the felly band being performed in the same-way? as the membersF and G areunited to' the felly band as'herein illustrated.

-ist-preferred uto weld the members E at' inter It is apparent. that the ringsQF- Glare united bywelding to. the band A' in order I to retain said ringsfixedly in position; with respect to the band and to preclude anyside wise movement of eithenrin-g For G rela--V tivelyto the band, as well as-to minimiz'e'the tendency ofytherings' F or G to rotatelon the band. The spirally twisted rings, are retained in position upon thebancl bythe rings F and G so as to precludecthe sidewise movement of; the ringsEi-with respect to the band, but, as stated, sna twisted j rings E may, and preferably are, weldedto' the band at intervalsforovercoming any rotative movement upon said band. i

The large numberofcontact points presented by the spirally twisted meinbers E see a 95.

cures a good grip uponthe roadsurfaee, and owing to the peculiar form of these contact edges, the {wheel cannot slip :upon or slide along such road surface. The. tread thus has such contact with the road thatthewheel will at alltimes'roll upon such surface, but In order to-pre'clude injuryto, certain kinds of pavementeitmay be desirable toiemploy the plane surfacedrings F G inconnection with the spirally twisted rings E saidplane v i i surfaced rings operatingin such manneras, to prevent the twisted ringsfrom cutting into the pavement or the road surface and enabling the wheel to ride upon: cartracks or other obstructions withoutslipping'there on and without cuttingftheredges of ithef pave1nents.'

In a preferred form, the wheel tread con- I sists of a plurality .of spirallyjtwisted rings,

andother ringsthe surfaces of which are,

smooth, but in certain classesoew rkne 111-5 entire surface ofthe tread, exposedfor-icone T tact with'the roadway, maybe formed ,ex- I clusively by a series of spirally twisted rings as indlcated in Fig 5. According to this form of'the invention, thespirallytwisted rings E are positioned adjacenteach other and across the surfacenofthefellybai-ndHA-Q and said rings E", are, mechanically-sepw,

or pins 6, the latter being'attachedfto orfin-f rated fromcontact with. each other studs 'tegral with the felly baud A.- These studs f or pins operate primarily to.v preclude, any I v :sidewise displacement of the twisted rings;-

upon the felly,ban.d,butit is .apparentQthat each twi'sted, ring may beshrunkeroundthe-43d felly band or may be welded at intervals a plurality of annular members each composed of twisted metal presenting a multiplicity of road contact points.

2. A tread'for vehicle wheels embodying a rim band, and a plurality of annular members positioned exteriorly to said rim band, each annular member being composed of twisted metal,

3. A tread for vehicle Wheels embodying a rim band, a plurality of annular members each composed of twisted metal, and marginal bands positioned at the edge portions of the rim band.

4. A tread for vehicle wheels embodying a rim band, a plurality of annular members composed of spirally twisted metal, said annular members being positioned in close relation to each other, and marginal members united to the rim band, said plurality of annular members being positioned intermediate the marginal members and the spiral material of said annular members presenting a multiplicity of road contact points or surfaces adapted for securing a grip upon the road surface.

5. A wheel tread comprising a rim'band, and annular members'positioned upon said rim band and each composed of twisted metal, the edge portions of which constitute a traction surface, said members being positioned relatively close and producing spaces into which is adapted to be packed material picked up from the road surface.

6. A wheel tread comprising arim band,

a plurality of annular members each composed of twisted metal, and mechanical separators for retaining the annular members from displacement. relatively to said rim band.

7. A wheel tread the traction surface of which is composed of spirally twisted metal in the form of metal rings positioned in close relation to each other.

8. A wheel tread comprising metal rings each composed of spirally twisted metal, said metal rings being positioned in close relation to each other and producing interme diate spaces for the reception of a filling material.

In testimony signed my name.

CHARLES A. PETTIE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

whereof have hereunto 

